Together AI: $800M Series C at $8.3B - Open-Source AI Infrastructure Wins

Together AI just closed $800M Series C (post-$8.3B valuation) to power enterprise AI on open-source models. This is the biggest infrastructure play of Q2 2026.

What it is: Cloud platform for training and running open-source AI models (DeepSeek, MiniMax, Kimi) at 10x lower cost than proprietary APIs.

How they got there:

- Founded 2022 to solve the API tax problem - enterprises paying 10x for closed models
- Built integrated platform: training + inference + fine-tuning in one place
- Positioned for AI agents (60% of new database launches now AI-driven)
- $1.15B ARR with customers like Cursor, Cognition, Decagon
- Syndicate: Aramco Ventures (lead), Vista, General Catalyst, Nvidia, Salesforce Ventures

Why it matters: The frontier lab era is ending. Enterprises now want to own their models. Together AI proved open-source + infrastructure = $8B+ business.

Founder move: If you're building AI products, you're choosing between renting (OpenAI/Anthropic) or owning (Together AI). The math is shifting toward ownership.

https://techcrunch.com/2026/07/01/together-ai-raises-800-million-series-c-to-power-open-source-ai-workloads/

#AIInfrastructure #Founders

Brewed by Startup Beaker.